[优化] 更新缓存控制逻辑，增加静态资源和文档请求的处理

atsf_server/middleware/cache.go

@@ -1,12 +1,37 @@
 package middleware
 
 import (
+	"path"
+	"strings"
+
 	"github.com/gin-gonic/gin"
 )
 
 func Cache() func(c *gin.Context) {
 	return func(c *gin.Context) {
-		c.Header("Cache-Control", "max-age=604800") // one week
+		requestPath := c.Request.URL.Path
+
+		switch {
+		case strings.HasPrefix(requestPath, "/_next/static/"):
+			c.Header("Cache-Control", "public, max-age=31536000, immutable")
+		case isStaticPublicAsset(requestPath):
+			c.Header("Cache-Control", "public, max-age=86400")
+		default:
+			c.Header("Cache-Control", "no-store, no-cache, must-revalidate")
+			c.Header("Pragma", "no-cache")
+			c.Header("Expires", "0")
+		}
+
 		c.Next()
 	}
 }
+
+func isStaticPublicAsset(requestPath string) bool {
+	ext := strings.ToLower(path.Ext(requestPath))
+	switch ext {
+	case ".ico", ".png", ".jpg", ".jpeg", ".gif", ".svg", ".webp", ".css", ".js":
+		return true
+	default:
+		return false
+	}
+}